JP2009216271A - Burner and roaster provided with burner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem that a mixture gas has the strong tendency to flow in the forward direction, and both of a ring section and a pressure adjusting plate need positioning means. <P>SOLUTION: The ring section 3 of a large diameter is disposed at an upper part of an introducing section 2 of the mixture gas of a gas and the primary air, and connected roughly in the tangential direction to the introducing section 2, a plurality of burner ports 4, 4a, etc. are arranged at equal intervals along the circumferential direction on an inner peripheral face of the ring section 3, the annular diskoidal pressure adjusting plate 9 is disposed at a lower part with respect to the burner ports 4, 4a, etc. in the ring section 3, and a plurality of through-holes 19, 19a, etc. are regularly formed on the pressure adjusting plate 9. As the mixture gas flows into the ring section 3 upper than the introducing section 2, the mixture gas easily flows to the opposite direction side of the flowing direction in the ring section 3, and a flow rate of the mixture gas from each of the burner ports 4, 4a, etc. can be equalized without setting coarse and fine, and small and large of a diameter of the through-holes 19, 19a, etc., by allowing the mixture gas to pass through very narrow through-holes 19, 19a, etc. in a process for transferring the mixture air from the lower space to the upper space in the ring section 3 vertically divided by the pressure adjusting plate 9. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention comprises an introduction portion through which a mixture of gas and primary air flows, and a large-diameter ring portion disposed above the introduction portion and connected in a substantially tangential direction to the introduction portion, The present invention relates to a burner provided with a plurality of flame openings arranged at equal intervals along the circumferential direction on the inner peripheral surface of the ring portion, and a roaster provided with the burner.

  Conventionally, in an internal flame mouth type burner in which an introduction portion through which a mixture of gas and primary air flows is connected in a substantially tangential direction of the ring portion, the introduction portion is connected to the side portion of the ring portion. In general, the cross-sectional area of the flow path of the ring part is gradually narrowed from the connection part with the introduction part to the opposite side, and the minimum cross-sectional area part is set at a position shifted from the diagonal position of the maximum area part. As a result, the air-fuel mixture that easily flows in the forward direction can be easily flowed in the reverse direction, the pressure increase in the flow path in the forward direction is alleviated, and the compactness of the burner is ensured, and the entire circumference of the ring portion is covered. It can be seen that the mixing air pressure is equalized, and as a result, the flow rate of the air-fuel mixture from each flame outlet is more evenly equalized (see, for example, Patent Document 1).

  In addition, although it is an external flame mouth type burner in which the introduction part is orthogonal to the ring part, an annular plate-shaped and porous rectifying plate is installed in the upper opening of the small-diameter ring part, and the hole is roughened on the supply side. It can be seen that the flow rate of the air-fuel mixture at each flame outlet can be made substantially uniform by decreasing the diameter and gradually increasing the pore area toward the diagonal (see, for example, Patent Document 2). ).

Japanese Patent No. 3686045 (Claims, FIG. 3) Japanese Utility Model Publication No. 7-12709 ([0014], [0018], [0021], [0022], FIGS. 1 and 3)

  However, in the prior art described in Patent Document 1, since the introduction part is connected to the side part of the ring part, there is a problem that the air-fuel mixture tends to flow in the forward direction and is difficult to flow in the reverse direction. In the prior art described in Patent Document 2, since the ring portion has a small diameter in the external flame mouth burner, the pressure difference over the entire circumference increases, so the density of the holes in the current plate and the size of the diameter are reduced. Since it is necessary to set, there is a problem that must be solved, for example, positioning means is required for both the ring portion and the current plate.

  The present invention is based on the above prior art, and the air-fuel mixture has a strong tendency to flow in the forward direction. In view of the problem that positioning means are required for both the ring part and the pressure adjusting plate, the gas and primary air are mixed. By configuring the air introduction portion and the large-diameter ring portion disposed above the introduction portion and connected in a substantially tangential direction with respect to the introduction portion, the air-fuel mixture is transferred to the ring portion above the introduction portion. By flowing in, it is possible to easily flow in the direction opposite to the flow direction in the ring portion, and by making the ring portion large in diameter, the difference in pressure distribution over the entire circumference of the ring portion is relatively reduced. Further, a plurality of flame holes arranged at the same interval along the circumferential direction are provided on the inner circumferential surface of the ring part, and an annular plate-like pressure adjusting plate is provided below the flame hole in the ring part. And arranging a plurality of through holes regularly in the pressure adjusting plate. In the process of the air-fuel mixture moving from the lower space to the upper space through the ring section divided by the pressure adjusting plate, the pores in the pressure adjusting plate are made dense and dense. And the above-mentioned subject is solved by making the flow volume of the air-fuel mixture from each flame mouth in the ring part more uniform without setting the size of the diameter.

In short, the present invention is composed of an introduction part of a mixture of gas and primary air, and a large-diameter ring part arranged above the introduction part and connected in a substantially tangential direction to the introduction part, Since the plurality of flame openings arranged at the same interval along the circumferential direction are provided on the inner peripheral surface of the ring portion, the air-fuel mixture flows into the ring portion above the introduction portion, so that the air-fuel mixture flows in order. Since the tendency to flow in the direction can be suppressed, the air-fuel mixture can easily flow into the direction opposite to the flow direction in the ring part. The pressure distribution difference over the ring portion can be made relatively small, and an annular plate-shaped pressure adjustment plate is disposed below the flame opening in the ring portion, and a plurality of passage holes are regularly formed in the pressure adjustment plate. So that the inside of the ring section divided by the pressure adjusting plate is mixed. In the process in which the gas moves from the lower space to the upper space, the pressure distribution of the air-fuel mixture in the lower space in the ring portion is first made substantially equal by passing it through a very narrow passage hole. By shifting, it is possible to further equalize the pressure distribution in the upper space, that is, the pressure distribution can be adjusted in two stages by dividing the inside of the ring portion by the pressure adjusting plate. The flow rate of the air-fuel mixture from each flame outlet in the ring part can be made uniform evenly.
Furthermore, the flow path of the ring part is formed so that the cross-sectional area gradually narrows from the maximum area part to the minimum area part set on the diagonal side of the maximum area part, and the communication opening between the introduction part and the ring part The cross section of the flow path in the reverse direction is gradually wider than the communication opening and reaches the maximum area part because the part is formed to be shifted to the forward direction side of the flow direction in the ring part with respect to the maximum area part. After that, the air-fuel mixture is gradually narrowed to the minimum area portion, so that the air-fuel mixture can be more easily flowed into the flow path in the reverse direction from the communication opening.

An upper opening-shaped outer box is fitted and supported in the opening formed in the table, and an exhaust port to the exhaust part disposed at the lower part of the outer box is formed at the bottom center of the outer box. On the inner bottom surface, a hollow cylindrical oil and fat adsorbent through which exhaust gas can freely pass is placed so as to surround the exhaust port, and the inner box is located at the boundary between the upper part of the inner box and the lower part of the drain pan part. A stepped portion formed by squeezing the lower part is seated on the upper surface of the oil and fat adsorbing body, an inner box is placed on the oil and fat adsorbing body, and a suction channel with a predetermined interval is formed between the outer box and the inner box, A connecting connecting part that allows the connecting cylinder to pass through one side of the outer box and the inner box, and that the outer projecting part of the connecting cylinder overlaps to connect the outside of the outer box to the inside of the inner box. The bar according to claim 1 or 2 is formed on a burner receiver detachably accommodated above the drain pan in the inner box. A lower support plate that is placed on the upper surface of the lower plate of the connecting cylinder of the inner box, and the burner is placed in the inner box, the base end of the introduction portion of the burner is inserted into the communication connecting portion. By placing the base end of the introduction part on top, the center line of the introduction part of the burner is accommodated in the inner box in a state of being inclined in the horizontal direction with respect to the center line of the communication connecting part on the outer box and inner box side. The injection nozzle installed in the connecting cylinder of the outer box is installed on the extension of the center line in the introduction part of the burner with a predetermined angle with respect to the center line of the communication connection part, and the base of the introduction part of the burner A slight gap is set between the end face and the tip of the injection nozzle on the outer box side, so an inner box with a burner or the like inside can be installed from above the empty outer box or Until the housed parts in the inner box cool down. It is possible to perform cleaning work, etc., and by filling the inner box directly with water, it is possible to eliminate the need for a separate drain pan to be housed in the inner box, reducing the number of parts. I can do it.
In addition, the distance between the burner surface of the object to be cooked, such as rooster and grill, and the burner must be kept constant in order to maintain cooking performance. However, as the burner becomes higher, the burner installation position decreases. As the distance from the water surface becomes narrow, the evaporation rate of water becomes faster and the frequency of water replenishment increases, but the burner receiver is formed by bending an appropriately shaped plate material and at least installed. The burner has a mounting plate at the tip of the burner, and an inclined heat shield plate that is continuously formed on the mounting plate and is disposed immediately below the burner, and has both ends locked to the stepped portion of the inner box. Because it is a part, the radiant heat from the burner can be blocked by the heat shield plate, so the evaporation rate of water can be suppressed, so the frequency of water replenishment work can be made equivalent to the conventional one, etc. Practical effect is great

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 and 2 are a plan view and a front view of a burner according to the present invention, FIGS. 3 and 4 are a cross-sectional view taken along lines AA and BB in FIG. 1, and FIG. FIG. 6 is a plan view of the burner with the burner head and the pressure adjusting plate removed.
An internal flame mouth type burner 1 according to the present invention basically includes an introduction portion 2 through which a mixture of gas and primary air flows, and is disposed above the introduction portion 2 and is located above the introduction portion 2. A plurality of flame ports 4, 4 a... Are arranged on the inner peripheral surface of the ring portion 3 at the same interval along the circumferential direction.

  In the introduction portion 2, the tip portion is bent so as to follow the ring portion 3, and a communication opening 5 is formed at the boundary portion between the tip portion and the ring portion 3 so that the flow paths of both are communicated. ing.

The flow path of the ring part 3 is formed so as to be gradually narrowed from the maximum area part 6 of the cross-sectional area to the minimum area part 7 on the opposite side, and the communication opening part 5 flows the air-fuel mixture from the maximum area part 6. They are formed so as to be shifted in the forward direction (counterclockwise in FIG. 6).
That is, the distance from the introduction portion 2 to the minimum area portion 7 of the air-fuel mixture flowing in the forward direction (counterclockwise in FIG. 6) and the minimum area portion 7 of the air-fuel mixture flowing in the reverse direction (clockwise in FIG. 6). The distance of the latter is made longer in the latter, and the former is gradually narrowed to the minimum area portion 7, whereas the latter is gradually widened to reach the maximum area portion 6 and then reaches the minimum area. It gradually narrows to part 7.

In the ring portion 3, a gas flow path portion 8 formed integrally with the introduction portion 2, and a circle located below the flame ports 4, 4 a. An annular plate-like pressure adjusting plate 9 and a burner head 10 crowned on the upper opening of the gas flow path 8 are configured.
An upper end surface of the inner peripheral wall 11 of the gas flow path portion 8 is formed as an inclined surface 12 that extends outward and downward, and a contact surface with the inclined surface 12 of the burner head 10 is an inclined surface 14 that matches the inclined surface 12. In addition, in the burner 1 shown in FIGS. 1 to 6, on the inclined surface 12 on the gas flow path portion 8 side, in the burner 1 shown in FIG. 7, on the lower end surface of the inner peripheral wall 13 on the burner head 10 side. .. Are formed at the same pitch in the radial direction on the inclined surface 14, and the inclined surface 14 on the burner head 10 side and the inclined surface 12 on the gas flow path 8 side are formed. The flame mouths 4, 15a are formed on the inner peripheral surface of the ring portion 3 by the fire grooves 15, 15a, or by the fire grooves 15, 15a, ... of the inclined surface 12 on the gas flow path 8 side and the inclined surface 14 on the burner head 10 side. ... is formed.
The outer peripheral wall 16 of the burner head 10 is fitted on the outer peripheral wall 17 of the gas flow path portion 8, and burner support legs 18 and 18 a that are supported by a burner receiver 37 described later are provided on the lower surface of the ring portion 3.
In the pressure adjusting plate 9, a plurality of passage holes 19, 19 a... Are regularly formed on the flange portion 20 provided around the upper portion of the inner wall surface of the outer peripheral wall 17 of the gas flow path portion 8. It is placed.

  According to the burner 1, it becomes possible to make the air-fuel mixture flow rates at the respective flame outlets 4, 4a,.

Next, in the smokeless roaster using the burner according to the present invention, as shown in FIGS. 8 to 17, the outer box 23 having an upper opening shape is fitted into the opening 22 formed at the substantially central position of the table 21. 8-10, 13 (a), 13 (b), a circular exhaust port 24 is formed in the center of the bottom of the outer box 23 to exhaust the outer box 23 and its lower part. It communicates with part 25.
On the inner bottom surface of the outer box 23, a hollow cylindrical oil and fat adsorbing body 26 through which exhaust gas can freely pass is placed so as to surround the exhaust port 24 and accommodated in the outer box 23 on the oil and fat adsorbing body 26. The inner box 27 in a state is placed, and suction channels 28 with a predetermined interval are formed between the outer box 23 and the inner box 27.

The connecting cylinders 29 and 30 are passed through one side of the outer box 23 and the inner box 27, respectively, and the outer protruding portions of the connecting cylinders 29 and 30 are overlapped, so that the outer side of the outer box 23 and the inner box 27 are overlapped. A communication connection portion 31 having a substantially square cylindrical shape with an opening connected to the inside is formed, and the communication connection portion 31 is disposed in a state of partially traversing the suction flow path 28 between the outer box 23 and the inner box 27.
The connecting cylinders 29 and 30 are both substantially rectangular tube-shaped or gate-shaped, and at least the upper plate of the connecting cylinder 29 on the outer box 23 side protrudes inward, and the upper part of the connecting cylinder 30 on the inner box 27 side. The plate protrudes outward, and the lower plate of the connecting tube 29 on the outer box 23 side protrudes inward, and the lower plate of the connecting tube 30 on the inner box 27 side protrudes outward, The upper plate on the inner box 27 side is seated on the upper plate on the outer box 23 side, and the lower plate on the inner box 27 side is seated on the lower plate on the outer box 23 side. When connecting and removing the inner box 27 from the outer box 23 so that the end portion and the upper plate on the outer box 23 side do not overlap, the communication connecting portion 31 is connected to the connecting cylinder 29 of the outer box 23 and the connecting cylinder 30 of the inner box 27. To be separated.

  The oil and fat adsorbing body 26 is basically made of a ceramic (inorganic material) made of a porous material in which oil and fat permeate between inner and outer cylinders having a large number of air holes, and having a particle diameter of 1 mm or more. A cap filled with an adsorbent and closing the upper opening and having a depressed central part is attached.

In the inner box 27, as shown in FIGS. 8 to 10, 14 (a) and 14 (b), basically, the upper part is the accommodating part 32 and the lower part is the drain pan part 33. A step 34 is formed by squeezing the inner box 27 at a position below the connecting cylinder 30, and the step 34 is seated on the upper surface of the oil adsorbent 26, and the inner box 27 is placed on the oil adsorber 26. By doing so, the exhaust gas passes through the oil adsorbent 26.
Further, the drain pan portion 33 is formed so as not to hit the cap because the drain pan portion 33 is accommodated in the central depression of the cap, but the bottom surface is formed to be as wide and deep as possible. preferable.
Further, the upper portion of the inner box 27 is expanded in diameter, and the flat portion formed in the stepped portion is formed with a placement portion 36 on the outer peripheral portion of the food placing body 35 such as a rooster or a grill. .

The burner 1 is placed on the burner receiver 37 accommodated in the inner box 27, the burner 1 is accommodated in the inner box 27, and the proximal end of the introduction part 2 of the burner 1 is in the communication connection part 31. And the base end of the introduction portion 2 is placed on the lower support plate 37a provided on the upper surface of the lower plate of the connecting tube 30 of the inner box 27 and extending over the entire width direction of the lower plate of the connecting tube 30. Yes.
As shown in FIG. 9, the center line in the introduction part 2 of the burner 1 is inclined in a horizontal direction by a predetermined angle with respect to the center line of the communication connecting part 31 on the outer box 23 and inner box 27 side. 27, and the injection nozzle 70 installed in the connecting cylinder 29 of the outer box 23 on the basis of the center line in the introduction part 2 of the burner 1 is similarly set at a predetermined angle with respect to the center line of the communication connection part 31. And the base end surface of the introduction portion 2 of the burner 1 is not overlapped with the inner end portion of the upper plate of the connecting cylinder 29 on the outer box 23 side. And a slight gap 71 is set between the tip of the spray nozzle 70 on the outer box 23 side.
The lower support plate 37a is formed so as to extend over the entire width direction of the lower plate of the connecting cylinder 30 to prevent the water in the inner box 27 from flowing out of the inner box 27.

In the burner receiver 37, it is disposed above the drain pan portion 33 in the inner box 27, one end is on the upper surface of the lower plate of the connecting cylinder 29 of the inner box 27, and the other end is the upper surface of the step portion 34 in the inner box 27. It is mounted on.
Specifically, as shown in FIGS. 8 to 10 and 15, a gently inclined heat shield plate 38 disposed immediately below the burner 1, and a mounting plate that is continuously formed horizontally from the upper end of the heat shield plate 38. 39 and a steeply inclined support plate 40 continuously formed obliquely below the front end of the mounting plate 39.
An oil drain hole 41 is provided at a position corresponding to the center of the inner box 27 in the heat shield plate 38, and a pair of locking pieces 42, 42a project horizontally from both sides of the lower end.
Fitting holes 43 and 43a for the burner support legs 18 and 18a of the burner 1 are provided at both ends of the mounting plate 39 as described above.
A pair of locking pieces 44, 44a project horizontally from both sides of the lower end of the support plate 40 outward.

As shown in FIG. 8, a cylindrical heating means receiving body 45 is placed on the upper part of the burner 1, and five fan-shaped ceramic charcoal 46, 46a... Are placed on the heating means receiving body 45. Is placed so that the tip on the center side is inclined and placed on the support 47, and the gravy that has fallen on the ceramic charcoal 46, 46a at the time of use is dropped from the tip side by flowing down the surface. By doing so, the oil drain hole 41 of the burner receiver 37 is passed and can be accommodated in the drain pan portion 33.
Alternatively, as shown in FIG. 16, a heating plate 48 for heating and cooking the cooked food by the radiant heat on the heating means receiver 45 having a cylindrical shape is heated by the burner 1, As shown in FIG. 17, the flange 50 at the upper outer peripheral edge of the lower opening-shaped casing 49 is placed on the mounting portion 36 in the inner box 27, and the casing 49 is installed above the burner 1. A charcoal net 51 is provided in the lower part of the casing 49, and charcoal 52, 52a,.

A gripper 53 attached to the upper opening of the inner box 27 and capable of hanging and transporting the inner box 27 is a disc-shaped lid portion 54 having a smaller diameter than the inner diameter of the inner box 27 as shown in FIGS. A grip portion 55 is provided at the center of the upper surface of the cover portion, four projecting pieces projecting in a cross direction outward from the outer peripheral portion of the lid portion 54 are provided, and one pair of projecting pieces positioned in the diametrical direction is connected to the inner box 27 The locking pieces 58 and 58a are inserted into the mounting holes 57 and 57a formed in the rising portion 56 above the outer peripheral portion of the mounting portion 12, and the other pair of projecting pieces are the anti-vibration pieces 59 and 59a. .
Specifically, the locking pieces 58, 58a have contact plate portions 60, 60a to the upper edge portions of the mounting holes 57, 57a, and upper surfaces of the corresponding contact plate portions 60, 60a. At the front end of the contact plate portion 60a of the other locking piece 58a, and a protrusion 61 projecting upward so that it can be inserted into the corresponding other mounting hole 57a. 59a includes a pressing plate portion 62, 62a positioned above the upper end of the inner box 27, and a shift stopper plate 63, 63a projecting downward from the tip of the pressing plate portion 62, 62a. Yes.
In the drawing, in the locking pieces 58, 58a, the contact plate portions 60, 60a are formed via the inclined plate portions 64, 64a provided outward and downward on the base end side, In the brace pieces 59 and 59a, the pressing plate portions 62 and 62a are continuously formed at the upper ends of the rising plate portions 66 and 66a provided on the base end side.

Then, as shown in FIGS. 11 (a) to 11 (c), the one gripping piece 58 is attached to the inner box 27 with the gripper 53 tilted with the one locking piece 58 facing down. After inserting into the hole 57 from the inside of the inner box 27, the gripper 53 is returned horizontally and shifted laterally, and the other locking piece 58a is inserted into the mounting hole 57a of the inner box 27 from the inside of the inner box 27. When lifted later, the contact plate portions 60, 60a of the locking pieces 58, 58a contact the upper edge portions of the mounting holes 57, 57a to bring them into the state shown in FIG. 12, and as shown in FIG. The inner box 27 is lifted while the burner 1 and the like are accommodated. At that time, the burner 1 and the connecting cylinder 30 on the inner box 27 side can be pulled out without hitting the connecting cylinder 29 of the outer box 23. It can be accommodated without hitting at the same time.
In addition, even when the gripper 53 is displaced toward the retaining 61 side of the other retaining piece 58a in the direction of the retaining pieces 58, 58a when the inner box 27 is transported, it stops against the retaining 61 and stops. The inner box 27 does not fall out of the gripper 53 because it cannot be removed from the one mounting hole 57. Further, the deviation in the direction of the anti-vibration pieces 59, 59a hits the deviation prevention plate portions 63, 63a of the anti-vibration pieces 59, 59a, and there is no further deviation.

Next, the operation of the burner according to the present invention will be described.
A part of the air-fuel mixture supplied from the introduction part 2 flows into the ring part 3 from the communication opening 5 in the forward direction, and the rest flows into the ring part 3 from the communication opening 5 in the reverse direction. Since the road gradually widens from the communication opening 5 and reaches the maximum area 6 and then gradually narrows to the minimum area 7, the air-fuel mixture easily flows into the ring part 3 in the reverse direction, and thus the introduction part 2 This prevents the air-fuel mixture supplied from the air from flowing into the ring part 3 in the reverse direction, and mitigates the rise in the mixed air pressure in the forward flow path.
The flow path in the ring portion 3 is divided into upper and lower sections by the pressure adjusting plate 9, and after the air-fuel mixture is first filled in the lower space, the pressure distribution of the air-fuel mixture in the lower space is substantially equalized, and then the narrow passage hole is formed. 19, 19a... Passes through a wide upper space, so that the pressure distribution in the upper space is further equalized, so that the flow rate of the air-fuel mixture from each flame port 4, 4 a. Uniformity is ensured.

Next, the operation of the roaster provided with the burner 1 will be described.
In the burner 1, as shown in the front view of FIG. 2, the length from the base end to the tip of the ring portion 3 can be shortened even if the introduction portion 2 is lengthened. Even if the outer diameter of the ring part 3 is increased to some extent, the center line of the introduction part 2 of the burner 1 is horizontal with respect to the center line of the communication connecting part 31 on the outer box 23 and inner box 27 side as shown in FIG. The base end side of the introduction part 2 is installed in a state where the base part side of the introduction part 2 is slightly inserted into the connecting cylinder 30 in a state inclined to the direction, so that the base end of the introduction part 2 in the burner 1 is inside the connection cylinder 29 in the outer box 23. Therefore, the inner box 27 can be lifted upward while the burner 1 and the like are accommodated therein.
At that time, since there is a lower support plate 37a on the inner end side of the connecting cylinder 30 in the inner box 27, even if the water surface in the inner box 27 is shaken up and down, it is blocked by the lower support plate 37a, and the connecting cylinder Does not flow out of 30.

Although the space between the water surface of the water stretched in the inner box 27 and the burner 1 is narrow, a burner receiver 37 is interposed between them, and the portion immediately below the burner 1 in the burner receiver 37 is a gently inclined heat shield. Since the radiant heat from the burner 1 is reflected by the heat shield plate 38 at 38, the propagation of the radiant heat downward is suppressed and the evaporation rate of water becomes slow.
It can be attached to and detached from the inner box 27. Specifically, it is installed on the inner box 27 simply by placing both ends on the stepped portion 34. In addition, the burner receiver 37 is formed by bending an appropriately shaped plate material, and is easy to clean because it has few irregularities.

It is a top view of the burner concerning the present invention. It is a front view of FIG. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is a top view of the burner which removed the burner head. It is a top view of the burner which removed the burner head and the pressure adjustment board. It is sectional drawing of the other Example of a burner. It is sectional drawing of the roaster which installed the burner which concerns on this invention. FIG. 9 is an enlarged plan view of the roaster of FIG. 8 in which the inner box is set in a removable state. It is a top view of the roaster of FIG. 8 in a state where the inner box is lifted. It is a schematic sectional drawing which shows the 1st step of the attachment process of a gripper. It is a schematic sectional drawing which shows the 2nd step of the attachment process of a gripper. It is a schematic sectional drawing which shows the 3rd step of the attachment process of a gripper. It is a perspective view of the inner box which attached the gripper. It is a top view of an outer box. It is CC sectional drawing of Fig.13 (a). It is a top view of an inner box. It is DD sectional drawing of Fig.14 (a). It is a perspective view of a burner receptacle. It is sectional drawing of the roaster which installed the heating plate. It is sectional drawing of the roaster used for charcoal.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Burner 2 Introduction part 3 Ring part 4, 4a ... Flame port 5 Communication opening part 6 Maximum area part 7 Minimum area part 9 Pressure adjusting plate
19, 19a… Passing hole
21 tables
22 opening
23 Outer box
24 Exhaust port
25 Exhaust section
26 Oil and fat adsorbent
27 inner box
28 Suction channel
29 Connecting cylinder
30 connecting cylinders
31 Communication connection
32 containment
33 Drain pan section
34 Step
37 Burner receiver
37a Lower support plate
38 Heat shield
39 Mounting plate
70 Injection nozzle
71 Clearance

Claims (4)

  An introduction part of a mixture of gas and primary air, and a large-diameter ring part disposed above the introduction part and connected in a substantially tangential direction to the introduction part. A plurality of flame openings arranged at equal intervals along the circumferential direction are provided on the peripheral surface, and an annular plate-shaped pressure adjustment plate is disposed below the flame opening in the ring portion, and a plurality of pressure adjustment plates are disposed on the pressure adjustment plate. A burner characterized in that a plurality of through holes are regularly formed.   The flow path of the ring part is formed so that the cross-sectional area gradually narrows from the maximum area part to the minimum area part set on the diagonal side of the maximum area part, and the communication opening part between the introduction part and the ring part is formed. The burner according to claim 1, wherein the burner is formed so as to be shifted to the forward direction side in the flow direction in the ring portion with respect to the maximum area portion.   An upper opening-shaped outer box is fitted and supported in the opening formed in the table, and an exhaust port to the exhaust part disposed at the lower part of the outer box is formed at the bottom center of the outer box. On the inner bottom surface, a hollow cylindrical oil and fat adsorbent through which exhaust gas can freely pass is placed so as to surround the exhaust port, and the inner box is located at the boundary between the upper part of the inner box and the lower part of the drain pan part. A stepped portion formed by squeezing the lower part is seated on the upper surface of the oil and fat adsorbing body, an inner box is placed on the oil and fat adsorbing body, and a suction channel with a predetermined interval is formed between the outer box and the inner box, A connecting connecting part that allows the connecting cylinder to pass through one side of the outer box and the inner box, and that the outer projecting part of the connecting cylinder overlaps to connect the outside of the outer box to the inside of the inner box. The bar according to claim 1 or 2 is formed on a burner receiver detachably accommodated above the drain pan in the inner box. A lower support plate that is placed on the upper surface of the lower plate of the connecting cylinder of the inner box, and the burner is placed in the inner box, the base end of the introduction portion of the burner is inserted into the communication connecting portion. By placing the base end of the introduction part on top, the center line of the introduction part of the burner is accommodated in the inner box in a state of being inclined in the horizontal direction with respect to the center line of the communication connecting part on the outer box and inner box side. The injection nozzle installed in the connecting cylinder of the outer box is installed on the extension of the center line in the introduction part of the burner with a predetermined angle with respect to the center line of the communication connection part, and the base of the introduction part of the burner A roaster characterized in that a slight gap is set between the end face and the tip of the jet nozzle on the outer box side.   A burner receiver is formed by bending an appropriately shaped plate material, at least a mounting plate at the tip of the burner in an installed state, and an inclined heat shield plate arranged immediately below the burner, continuously formed on the mounting plate The roaster according to claim 3, wherein both end portions are locking portions to the step portion in the inner box.

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